Refire Or Recalcine Clinker Patents (Class 106/749)
  • Process for controlling a crystal form of alite in portland cement clinker
    Patent number: 8529690
    Abstract: The present invention relates to a process of controlling crystal form of Alite in Portland cement clinker, wherein the said Portland cement clinker is thermally treated in order to change the crystal form of Alite in Portland cement clinker, so as to improve performance of resulting Portland cement clinker. The said process of present invention is easy and feasible.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: September 10, 2013
    Assignee: Nanjing University of Technology
    Inventors: Xiaodong Shen, Suhua Ma, Xuerun Li, Lin Chen, Weiqiang Zhou, Song Deng
  • PROCESS FOR CONTROLLING A CRYSTAL FORM OF ALITE IN PORTLAND CEMENT CLINKER
    Publication number: 20130228102
    Abstract: The present invention relates to a process of controlling crystal form of Alite in Portland cement clinker, wherein the said Portland cement clinker is thermally treated in order to change the crystal form of Alite in Portland cement clinker, so as to improve performance of resulting Portland cement clinker. The said process of present invention is easy and feasible.
    Type: Application
    Filed: July 15, 2010
    Publication date: September 5, 2013
    Applicant: Nanjing University of Technology
    Inventors: Xiaodong Shen, Suhua Ma, Xuerun Li, Lin Chen, Weiqiang Zhou, Song Deng
  • Process for manufacturing of high iron hydraulic cement clinker
    Patent number: 6752865
    Abstract: The present invention describes a process for manufacture of high iron hydraulic cement clinker in production of cement and cementation binder for application in construction activity and in metallurgical industry for sintering of iron ore fines and making cold bonded briquettes and pellets. The process is cost effective and flexible for utilization of wide varieties of raw material consisting of lime and iron in production of high iron cements for different applications.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: June 22, 2004
    Assignee: Council of Scientific and Industrial Research
    Inventors: Bansidhar Nayak, Vibhuti Narayan Misra
  • Heat treatment in the control of the setting of cement
    Patent number: 5624492
    Abstract: Portland cement particles having the characteristics of slow hardening is oduced by a process of heat treating portland cement particles in the temperature range from 1500.degree. to 3000.degree. C. for from 0.5 to 10 seconds and cooling to obtain particles containing an amorphous, glassy shell as an outside layer.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: April 29, 1997
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Jerry P. Burkes, Clifford E. Grey, Jr., Philip G. Malone, Toy S. Poole, Charles A. Weiss, Jr.